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A kind of oil extraction and refining process of grain bran oil, quinoa bran oil and peony seed oil

Active Publication Date: 2022-03-04
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the problems of easy deterioration of raw materials and difficult refining in the existing rice bran oil production process, the obtained product meets the secondary standard of leached finished rice bran oil in GB19112-2003

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The process flow is as follows:

[0053] Process flow: sorting and removing impurities → subcritical extraction → filtration → high-voltage pulsed electric field → cryoprecipitation filtration → molecular distillation refining → finished product.

[0054] Specifically include the following steps:

[0055] (1) Raw material pretreatment; use fresh rice bran as raw material to remove solid impurities and control moisture content to <10%;

[0056] (2) Subcritical extraction: solid-liquid ratio 1:1, extraction temperature 35°C, extraction pressure 0.4MPa, extraction time 30min, extraction times 2 times, to obtain corn bran crude oil;

[0057] (3) Filtration and centrifugation: Centrifugal filtration of rice bran crude oil, 2500rpm, 30min, to remove impurities such as rice bran meal;

[0058] (4) High-voltage pulse electric field treatment: The bran crude oil produced in step (3) is subjected to high-voltage pulse electric field treatment, the electric field strength is 15k...

Embodiment 2

[0063] The process flow is as follows:

[0064] Process flow: sorting and removing impurities → subcritical extraction → filtration → high-voltage pulsed electric field → cryoprecipitation filtration → molecular distillation refining → finished product.

[0065] Specifically include the following steps:

[0066] (1) Raw material pretreatment; use fresh rice bran as raw material to remove solid impurities and control moisture content to <10%;

[0067] (2) Subcritical extraction: solid-liquid ratio 1:2, extraction temperature 55°C, extraction pressure 0.7MPa, extraction time 25min, extraction times 5 times, to obtain corn bran crude oil;

[0068] (3) Filtration and centrifugation: Centrifugal filtration of rice bran crude oil, 5000rpm, 10min, to remove impurities such as rice bran meal;

[0069] (4) High-voltage pulse electric field treatment: The bran crude oil produced in step (3) is subjected to high-voltage pulse electric field treatment, the electric field strength is 50k...

Embodiment 3

[0074] The process flow is as follows:

[0075] Process flow: sorting and removing impurities → subcritical extraction → filtration → high-voltage pulsed electric field → cryoprecipitation filtration → molecular distillation refining → finished product.

[0076] Specifically include the following steps:

[0077] (1) Raw material pretreatment; use fresh rice bran as raw material to remove solid impurities and control moisture content to <10%;

[0078] (2) Subcritical extraction: solid-liquid ratio 1: (1~3), extraction temperature 45°C, extraction pressure 0.5MPa, extraction time 30min, extraction times 4 times, to obtain crude bran oil;

[0079] (3) Filtration and centrifugation: Centrifugal filtration of rice bran crude oil, 3000rpm, 15min, to remove impurities such as rice bran meal;

[0080] (4) High-voltage pulse electric field treatment: The bran oil produced in step (3) is subjected to high-voltage pulse electric field treatment, the electric field strength is 20kV / cm, ...

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PUM

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Abstract

The invention relates to a method for extracting and refining oils such as rice bran, quinoa bran oil and peony seed oil. Its technological process: sorting and removing impurities → subcritical extraction → filtration → high-voltage pulse electric field → cryoprecipitation filtration → molecular distillation refining → finished product. In order to overcome the problems of time-consuming extraction and refining of existing oils such as bran oil, complex steps, and difficult removal of impurities, the present invention adopts subcritical extraction, high-voltage pulse electric field and molecular distillation technology combined refining, which can save time and improve efficiency, and Maintain the quality of bran oil. The invention has the advantages of high efficiency, environmental protection and simple process, and is suitable for large-scale production of rice bran oil.

Description

technical field [0001] The invention belongs to the field of food processing, and in particular relates to oil extraction and refining methods for rice bran oil, quinoa bran oil, peony seed oil and the like. Background technique [0002] Millet (Setaria italica) originated in China and has been cultivated since about 6000 BC. It is widely cultivated all over the world, such as Asia, India, Africa, Canada and the United States. It is rich in nutrients and can be used for food and feed. In China, millet is one of the main sources of food, mainly planted in Inner Mongolia, Jilin, Heilongjiang, Liaoning, Hebei, Shandong, Henan, Shaanxi and Shanxi; the planting area is about 1,400 square kilometers, and the annual output reaches 4 million tons. Bran is a mixture of the seed coat, aleurone layer and rice germ removed from millet during rice milling, with an annual output of about 400,000 tons, most of which are used for animal feed. Grain bran is rich in nutrients such as protein...

Claims

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Application Information

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IPC IPC(8): C11B1/04C11B1/10C11B3/00
CPCC11B1/04C11B1/10C11B3/001
Inventor 侯召华傅茂润任贵兴薛鹏张威毅刘丽索文璇
Owner QILU UNIV OF TECH